Registering device for gas-analyzers.



I. W,. & C. W. HAYS. REGISTERING DEVICE FOR GAS ANALYZERS.APPLICATIONQFILED SEPT. 14. 1914. RENEWED SEPT. 21, 1915.

1,1 84,095. Patented May 23,1916.

IIII

' I INVIE T RS WIT ESSES: 1

THE COLUMBIA PLANOORAPH c0., WASHINGTON. D. c.

JOSEPH HAYS AND CHARLES W, HAYS, OF CHICAGO, ILLINOIS.

nnersrnnme iinvron FOBGAS-ANALYZERS.

Specification of Letters Patent.

Patented May 23, 1916.

Original application filed July 17, 1913, Serial No. 779,547. Dividedand. this application filed September 14, 1914, Serial No. 861,736.Renewed September 27, 1915. Serial No. 52,962.

I To all whom it may concern gas is in the absorption vessel, therebymaterially reducing the time required to make a determination.

We attain the objects of our invention by the means illustrated in theacompanying' drawing, in which for the'sake of clearness,

we have shown only those parts of our automatic gas analyzer that relateto'the present invention.

'This application is a division of our copending application, Serial No.77 9,5417, filed July 17,1913. 7

In the drawing, B is the burette or gas measuring chamber and A theabsorption chamber. These are connected by the capillary tube, OT. A isconnected near the bottom by the tube A with the chamber X and Xisconnected at the top by the tube X with the chamber Y. Y is connectednear the bottom by the tube Y with the displacement tube, DT on whichthere is a scale, ISZ' A, A and the lower part of X are filled with achemical'solution, PS.' The lower part of Y, the tube Y and the lowerpart of DT are filled with Water, W while floating upon the chemicalsolution in X and the water in Y is a light oil, O, which completelyfills X and-the unoccupied portions of X and Y. A

dry chemical maybe used in A if desired and in such case the use of theoilO as a piston operating between the chemical and the water would beunnecessary as the air trapped in X and Y would act as such iston.

IT and OT are gas inlet and outlet tubes leading respectively to andfrom B. 1 I I A P is a gas pump, operated by a stream. of Waterdelivered through the pipe, WP.

The Water is delivered from P into the standpipe, StP. The standpipe issoldered into the water chamber WVO and extends down a short distanceinto same.

D- is a discharge siphon which empties the stand-pipe and the waterchamber when the water has accumulated in the stand-pipe to the overflowpoint, OF. The tubes IT and IT, connect with the pipes, IT and OT, asshown and are soldered into the top of WO.

BP is a by-pass valve connecting the tubes, IT and OT. A

The measurement of the gas sample at at mospheric pressure isaccomplished by means of the tube MT and the gas bag, GB as hereinafterdescribed. The apparatus is charged with the caustic potash solution orother liquid chemical used through the tube, POT, which is closed by theplug, POT The oil, O is introduced through the tube, O which is closedby the plug O .The percentage of the gas being determined is indicatedupon the scale IS by the displacement of water upward into DT. Thechamber, WC and the by-pass valve,

BP are filled with water, W and W The apparatus operates as follows: The

gas pump, or aspirator, P, which is operated by a small stream of waterdelivered through WP, creates a partial vacuum in the pipe, OT; This "iscommunicated to B and the pipe, IT, the latter being connected with thesource of gas supply. As a result of the lowered pressure, gas flowsthrough-IT, B and OT to P, where it mingles with the water. The water Wis discharged into 86F and accumulates in The Water in a few momentsreaches and seals the lower end of StP.'

' water accumulating in StP. As a result of this pressure, water VVisdisplaced from the chamber, WO through the tubes, IT and IT, into thetubes, IT, OT and MT and the burette, B. When the water reaches andvseals the lower ends of the tubes IT and OT, the flow of gas is shutoff, and aquantity of gas is trapped in B and MT. The gas flow isshortcircuited through BP, following the stoppage of flow through B. Asthe water rises toward B, some of the trapped gas is displaced into MTand the distensible the. capillary tube, CT, into A, displacing theliquid chemical, ,PS This, its turn, displaces the 011 piston, O, whichin its turn displaces the water, VV causing the latter to rise in thetube, DTZ A may be packed with a fibrous material, SWV, preferably steelwool, to increase surface exposure and expedite absorption, It is plainto be seen that the height to which thewater. rises along the scale, IS,is inversely proportional to the volume of gas absorbed in A. If it isdesired to produce a record of the analysis, a low pressure recordinggage may beconnectedaby tube with thetube, DT. By this arrangement Weare able to confine the chemical in the chambers, .A and X, where itwill not be exposed to anything except the gas introduced into A. Itwill be necessaryjin some cases to employ a chemical 'that'will beaffected by the oxygenof the air and if such chemical weredisplaced intoanopen tube and used'as an indicating-fluid it would rapidlydeteriorate. The arrangement enables usto employ a liquid,'-such asWater, having a'constant specific gravity, as" an indicating fluid. r ff 1 lVe claim. I V

1. A gas analyzer consisting of gas measuring and absorber vessels; agas'absorbing said first mentioned liquid.

' said tube and a liquid piston between said:

chemical in said absorber vessel; a tube connected with said absorbervessel a liquid in saidztube and a third liquid intermediate betweensaid gas absorbing chemical and 2. A gas analyzer consisting'of gas'measuring and absorber vessels; a gas absorbing chemical in said absorbervessel; a tube con nected with said absorber vessel; a liquid .in

chemical and said last'mentioned liquid.

3. A gas analyzer consisting of gas meas- Gobi'e'i of fl'xii patent maybe obtained for fivecents each, by addrentng the Commissioner ot l atent r; H

'uring and absorber vessels; at gas absorbing chemical 1n said absorbervessel; a tube connected with said absorber vessel; a liquid in saidtube; a third liquid intermediate between said gas absorbing chemicaland said Y first mentioned liquid, said third liquid bemg Of lessgravity than either said gas absorbing, chemical or said first mentionedchambers; a'- gas absorbing chemical in one of said chambers and a fluidin one of said chambers,- intermediate between said liquid f f f 5. Aregistering device for agas analyzer;

and said chemicalf consisting of; an absorption chamberconnected nearthe bottom with a second chamher, said second chamber being connected atthe top with a third chamber and said third chamber being connected atthe bottom With-- a tube; a gas absorbing chemical in said ab-,

- sorption chamber and the lower part of said second chamber; a liquidin said tube andthe lower part of. said third chamber and a and-thirdchambers-Q; V

, 6. A gas analyzer consisting of connected 75, i third liquid of lessgravity than-either of I said others andsolub-le. in neither, floatingupon both of said first mentioned liquids and fillingthe upper portionsof said second.

gas measuring, gas absorbing and absorptionregistering vessels-; a gasabsorbingchemical in the gas absorbing vessel;,a liquid intheregistering vessel;- a separating movable'i' medium-between saidQchemicaland said liquid and means for forcing gas from the measuringvessel into-the absorbing vessel thereby displacing the liquid insaidreg sfl 1? 1,90 In witness whereof, weha've hereunto set f teringivessel.

our handsand-sealsthis 17th day of'AU-gust,

JOSEPH W. HAYS, V[L. S.-]'

CHARLES IV. HAYS... [ms] H Witnesses: 1

' HrmY Gr. HAYS,"

FLORENCE NORMAN.

' Wash n ton. 11.0.!

